Which preposition to use with centum

above Occurrences 1%

It is reasonable to suppose that the goods were sold, on an average, at two hundred per centum above cost and carriage; and by this means the Indians would get about one third of the value of their corn at the contract price!they offered to let the receipts go at twenty-five per cent.

for Occurrences 1%

This sum, which we have reason to believe was duly paid by said SALADIN at the time appointed, when reduced from golden byzants into greenbacks, and compound-interest at seven per centum for the term of six hundred and seventy-nine years calculated thereupon, will be found to amount to upwards of one hundred and seventy thousand million dollars.

per Occurrences 1%

Henceforward he passed all his days among the rocks above the fall, whistling to himself while he whittled bits of cork and wood into quaint shapes, attached them to string, weighted them with pebbles, and lowered them over the fall into the Loughwhence, after fifty years he would draw them forth, and sell them to the simple surrounding peasantry at two hundred and fifty per centum per annum on the initial cost.

Which preposition to use with  centum